Inconsistent information from different modalities can be delusive for perception. This phenomenon can be observed with simultaneously presented inconsistent numbers of brief flashes and short tones. The conflict of bimodal information is reflected in double flash or fission, and flash fusion illusions, respectively. The temporal resolution of the vision system plays a fundamental role in the development of these illusions. As the parallel, dorsal and ventral pathways have different temporal resolution we presume that these pathways play different roles in the illusions. We used pathway-optimized stimuli to induce the illusions on separately driven visual streams. Our results show that both pathways support the double flash illusion, while the presence of the fusion illusion depends on the activated pathway. The dorsal pathway, which has better temporal resolution, does not support fusion, while the ventral pathway which has worse temporal resolution shows fusion strongly.

• MeSH
• akustická stimulace MeSH
• časové faktory MeSH
• iluze * MeSH
• lidé MeSH
• mladý dospělý MeSH
• psychometrie MeSH
• sluchová percepce MeSH
• světelná stimulace metody   MeSH
• teorie detekce signálu MeSH
• zraková percepce * MeSH
• zrakové dráhy fyziologie   MeSH
• zrakové korové centrum fyziologie   MeSH
• Check Tag
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

We performed a systematic study to check whether neurons in the area TE (the anterior part of inferotemporal cortex) in rhesus monkey, regarded as the last stage of the ventral visual pathway, could be modulated by auditory stimuli. Two fixating rhesus monkeys were presented with visual, auditory or combined audiovisual stimuli while neuronal responses were recorded. We have found that the visually sensitive neurons are also modulated by audiovisual stimuli. This modulation is manifested as the change of response rate. Our results have shown also that the visual neurons were responsive to the sole auditory stimuli. Therefore, the concept of inferotemporal cortex unimodality in information processing should be re-evaluated.

• MeSH
• akustická stimulace metody   využití   MeSH
• experimenty na zvířatech MeSH
• financování organizované MeSH
• Haplorrhini MeSH
• implantované elektrody využití   MeSH
• Macaca mulatta MeSH
• metaanalýza jako téma MeSH
• mozková kůra anatomie a histologie   fyziologie   MeSH
• neurony fyziologie   MeSH
• sluchové evokované potenciály fyziologie   MeSH
• sluchové korové centrum anatomie a histologie   fyziologie   MeSH
• statistika jako téma MeSH
• světelná stimulace metody   MeSH